Neck formation for paper receptacles.



APPLICATION FILED JULY 15, 1913.

Patented May 19, 191L q Vi tmeomo zamkm attomug ED STATES PATENT ornron.

NECK FORMATION FOR PAPER RECEPTACLES.

Application filed July 15, 1913. Serial No. 779,205.

Specification of Letters Patent.

Patented May 19,1914.

To all whom it may concern Be it known that I, WILBUR L. WRIGHT, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Heck Formations for Paper Receptacles, of which the following is a specification.

This invention relates to certain improvements in or relating to paper bottles and the like; and the objects and nature of the invention will be readily understood by those skilled in the art in the light of the following explanation of the accompanying drawings illustrating what I now believe to be the preferred mechanical expression from among other formations and. arrangements within the spirit and scope of the invention.

An object of the invention is to so improve the neck construction of paper matcrial bottles and the like that such bottles can be successfully handled and manipulated by capping and filling machinery.

A further object of the invention is to provide an improved flaring-mouth neck for paper material bottles and other vessels, wherein the paper Wall of the vessel is drawn or spun over a flaring or tapering stiffening'neck ring providing a substantial seating shoulder for closure caps, and so stiffening the neck that such bottle can be successfully supported and capped by machinery. I

A furtherobject of the invention is to provide certain improvements in details and in formation of parts whereby a most advantageous neck and mouth construction for paper vessels will be produced.

The invention consists in certain novel features in construction and in combinations and arrangements as more fully and particularly set forth hereinafter.

Referring to the accompanying drawings: Figure 1, is a vertical-longitudinal section through the neck portion of a paper vessel constructed in accordance with myinvention. Fig. 2, is a section on the line 2-2, Fig. 1. Figs. 3 to 9, both inclpsive, are sectional views of modified forms.

In the various views appearing in the drawings, I show "portions of the paper or paper-material surrounding wall 1, of any suitable bottle or other vessel of any desired ghapeand constructed in whole or in part of sheet or other paper and the like. The

wall of the paper bottle can be formed of one v the bore of the bottle neck.

or more sheets or plies of paper. I usually form the same of several overlying plies of paper coiled or wound under pressure and having their ends properly secured.

, The bottle wall is usually formed by Winding or wrapping the paper on a suitable mandrel of a shape to give the required form to the wall. The wall of the bottle is continued upwardly to form the neck 2, having or forming an upwardly enlarging flaring mouth 3. The neck or mouth of the bottle is stiffened and with comparative rigidity is held in the desired flaring form, by an annular member or neck ring 4, composed of metal or other relatively stiff material, and inclosed within the paper wall of the mouth or neck. This ring or annular stiffening member flares or enlarges upwardly from its lower edge to its top edge 4:. At its lower edge, said ring is formed with an annular usually flat or horizontal, inwardly projecting flange 4", arranged within and around The paper wall of the bottle is extended to surround this ring both externally and internally and to pass over the top edge 4, thereof and if, so desired, to face and inclose the flange 4. In other words,the neck ring is inserted in the neck of the paper wall, and the wall then projecting above said ring is then turned down into the. ring and the inner and outer paper plies and the intervening ring are tightly compressed and sealed together to form a solid approximately homogeneous mass or wall.

In practice, the paper wall is spun on the neck ring and is thereby caused to assume the flared form and because of the pressure applied thereto (and if desired the sealing material, such as paraffin, employed) said paper is so crushed or compressed as to approximately permanently maintain its position or form snugly fitting and conforming to the neck ring.

In the form shown by Figs. 1 and 2, the paper wall of the bottle is continued upwardly to form the exterior paper covering 5, surrounding said ring, and isthcn passed inwardly over and completely covering the top edge of the ring, and downwardly within the ring to form the paper covering 5",, for the interior surface of the ring, whlle the extremity ofsaid paper wall is turned inwardly to form the paper covering 5", over the flange 4". In this form the ring 18 formed with a slight annular'beadllf, or concam-convexity i'lmnedi'ately above the flange and the paper coverings are spun to snuglyconform to the interior groove and exterior bead formed by said portion 4, and if so desired, the ring at said bead can be 7 formed with one or more radially projectabove an outward annular bulge 4, and the paper walls are snugly spun to the exterior and interior surfaces of said bulges and to conform thereto to firmly lock the ring in the paper walls and to form a closure cap receiving groove and overhanging shoulder.

In Fig. 6, the flaring 'paper-wall-inclosed neck ring is formed with the indentations i to bite into the paper, but is not provided with the beads or annular grooves of the previously mentioned figures.

In the form disclosed by Fig. 7, the ring and consequently the mouth of the bottle has a straight flare or bevel instead of a curved flare as in the forms illustrated by the preceding figures of the drawings. Also, the ring (and consequently the bottle neck or mouth) has a cylindrical portion i immediately above the flange 4 and immediately below the upward flare or taper.

In the form disclosed by Fig. 8, the neck ring is formed with annular corrugations 4 and the inner and outer pa er walls are spun thereinto to snugly con, orm thereto and thereby aid in maintaining the paper and ring locked together.

In Fig. 9, the paper wall terminates just short of the flange 4", of the ring thereby leaving the same uncovered.

It is desirable to so form the necks or months of" paper ,milk bottles that such bottles can be sealed or closed by the flat disk like caps of commerce. These caps snap into the bottle mouths and fit snugly or closely therein and maintain their sealing positions by friction or by the elasticity of the parts. Considerable force and pressure is exerted in applying and in releasing such caps even where such caps are applled by hand. Bottles adapted for manipulation and capping by machinery must have their neck or. mouth portions capable of withstanding excessive lateral and downward pressure without breaking down or becoming distorted. q

Papermaterial bottles for use in capping machines require widelyflaring mouths for the ring is cooperation with the bottle guiding, holding with positive internal ledges or seats onwhich said plungers can seat the caps and which will prevent the caps from being forced past mere grooves or slight shoulders and into the bottles by the plungers. These widely flaring mouths and said ledges or seats must be capable of receiving the thrust of the plungers and other parts of the machines without breaking down. I accomplish these desirable results by employing a stiflening neck ring in the paper wall, as hereinbefore set forth, as I am thereby enabled to produce a widely flaring mouth supported throughout by the ring, and capable of withstanding the pressure and force applied thereto by capping machines without injury. Furthermore, I provide the lower or contracted edge portion of this ring wit-h the flangeforming or supporting the ledgethat forms the cap sealing seatin the bottle and receives the downward pressure of the cap forcing and seating plunger.

The pressure of this plunger on the flange is resisted by the entire outwardly flaring ring which is peculiarly and particularly locked in and to the paper walls to resist force exerted in adirection to force thering down from said walls. Furthermore, the wall of the bottle is preferably radially spun inwardly to a more or less extent under the lower end of the neck ring to form anannular supporting shoulder 1", under the ring where it turns in to form the flange 4 1 It will be noted that by reason of the flaring form'of the neck ring, downward pressure thereon will be in a direction to force the ring down in the paper vessel and thereby expand the same radially and that the paper walls will exert great force and power in. resisting and holding the ring against such relative movement. I find that the flange 49, also stifijens and strengthens the ring. The rings can be conveniently rolled into the desired cross sectional forma tion and into ring form from flat wire of the required width and cut oft in the necessary lengths to permit the ends of each length. forming a ring to be slightly separate and thereby allow a slight contraction of each ring until said ends abut when the paper walls are spun thereover and thereto.

It is evident that various changes, variationsand modifications might ,be resorted to without departing from the spirit and scope of my invention and hence I do not wish to limit myself to the exact disclosures hereof, and in this connection I wish to call attention to the fact that in the accompanyng drawlngs the flaring mouth is in some instances shown exaggerated in size, and

furthermore that I have not attempted to show the parts in proper proportion as to size.

What I claim is 1. A neck formation for paper wall receptacles and the like, embodying an upwardly and outwardly flaring neck ring having an inwardly extending annular flange at its lower edge, the paper wall of the receptacle facing the inner and outer surfaces of said ring and extending over the top ed e thereof and compressed thereto to secure the ring therein.

2. A neck formation for paper wall receptacles, embodying an upwardly and outwardly flaring neck ring having an internal annular sealing-seat-forming flange at its lower portion, the paper wall of the receptacle fitting under the lower end of said ring to form a supporting shoulder therefor and facing the outer surface of the ring and extending over the top edge of the ring and downwardly within the ring and compressed against and conforming to the surfaces of the ring and securing the ring therein.

3. A neck formation for paper wall receptacles, embodying a neck ring, the paper wall of the receptacle contracting under the lower end of said ring to form a supportin shoulder therefor, said wall being extende upwardly to entirely inclose the ring and then downwardly within the ring and compressed thereto to conform to the inner and outer surfaces thereof and to lock the ring against relative movement within the wall. 4. A a r wall receptacle having its neck formed with an internal closure receiving seat and with an upwardly and outwardly flaring mouth for guiding a closure to said seat, said neck and mouth formed by an upwardly and outwardly flaring flanged neck ring and the paper wall extending over the top edge of said ring and facin the inner and outer surfaces thereof an tightly compressed thereagainst and conwardl flaring neck ring, said wall being extende upwardly at the exterior of said ring to entirely surround the same and being extended downwardly within the rin and being compressed against the inner an outer surfaces of the ring to conform thereto and to lock the ring within the wall against relative movement, said ring being formed with irregular surfaces into intimate contact with which the paper wall is forced.

6. A neck formation for paper wall re ceptacles, embodying an upwardly and out wardly' flaring neck ring havin an internal annular sealing-seat-forming flange at its lower portion, the paper wall of the recep tacle extending over the top edge of the ring and facing and compressed against and conforming to the inner and outer surfaces of the ring and securing the ring therein.

7. A paper receptacle having an upwardly and outwardly flaring neck or mouth embodying an upwardly and outwardly flarin thin metal neck ring formed of a length 0 fiat wire having its ends approximately abutting and having its lower edge bent laterally to form an internal flange, the paper wall of the receptacle extending upwardly at the exterior of and inclosing said ring and being continued over the top edge of the ring and downwardly within the same, said wall being tightly compressed to the inner and outer surfaces of the ring and locking the ring therein.

In testimony whereof I aflix my signature in presence of two witnesses.

WILBUR L. WRIGHT. 

